..... Even if you ask for a shutdown to do your work, there is no magic button for lineman that turns off the power. They do it with hotsticks and rubber gloves and insulated bucket trucks, but it's still hot work.
Linemen receive specialized training and use specialized equipment to keep them safe while working hot. They wear voltage rated PPE work from insulated bucket trucks and practice their trade on a daily basis. A lineman would never go up without his PPE. He protects the line where he might come in contact with insulated hoses and mats. They rarely take chances, the consequences are too great for severe injury or death. Also, if the work can be done de-energized, it will be de-energized, no one will say, I've done this live before you don't have to de-energize it.